Product Overview
The Allen-Bradley 1794-TB32 is a Flex I/O terminal base unit engineered to host a variety of I/O modules within a complete Flex I/O system. Designed for 32-point modules, it provides secure connection points for input and output wiring, making it a cornerstone component in distributed control architectures.
Key Benefits & ROI
Investing in the Allen-Bradley 1794-TB32 reduces installation complexity and maintenance downtime. Its robust terminal design ensures reliable electrical connections, minimizing signal loss and system failures. With a wide operating temperature range and high shock/vibration tolerance, it delivers long service life in demanding industrial environments, translating into lower total cost of ownership.
Technical Specifications
| Specification |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
1794-TB32 |
| Product Type |
Flex I/O Terminal Base Unit |
| Terminal Screw Torque |
0.56-0.79 Nm |
| Supply Voltage Range |
max. 31.2V DC/AC, 50/60Hz, 10A |
| Isolation Voltage |
50V Continuous max. |
| Voltage Rating |
24V DC/AC |
| Wire Size |
0.21-1.3 mm² |
| Dimensions (with module) |
94 x 94 x 69 mm |
| UPC |
10612598281227 |
Applications
The 1794-TB32 excels in applications requiring distributed I/O, such as material handling, packaging machinery, and process control systems. For example, in a bottling plant, it can connect discrete sensors and actuators to a central PLC, ensuring reliable machine sequencing. In a wastewater treatment facility, it provides robust termination for level sensors and valve controls, maintaining uptime under harsh conditions.
Installation & Mounting
The 1794-TB32 supports both panel and DIN rail mounting, offering flexibility in cabinet design. Secure the terminal base firmly using the recommended screw torque of 0.56-0.79 Nm for terminal screws. Ensure wiring conforms to the specified wire size range (0.21-1.3 mm²) for optimal connection integrity.
Maintenance & Reliability
Regularly inspect terminal screws for proper torque and check for any signs of corrosion or loose connections. The unit's operating temperature range of -20 to 70 °C and 5% to 95% non-condensing humidity tolerance make it suitable for most industrial environments. Its 5 G vibration and 30 G shock ratings ensure stable performance in high-vibration applications.
Compatibility & Integration
As part of the Flex I/O 1794 series, the 1794-TB32 integrates seamlessly with other Flex I/O modules and Rockwell Automation control systems. It provides 32 I/O terminals, 8 common terminals, and 8 voltage terminals, with a FLEXBUS rating of 640 mA at 5 V DC. The V/COM terminal rating is 31.2 V DC/AC at 50-60 Hz, and the I/O terminal rating is 2 A max.
Selection Guide
When selecting the 1794-TB32, verify your system's voltage and current requirements against the supply voltage range (max 31.2V DC/AC) and current capacity (10A). Confirm the required number of I/O points and mounting method. For detailed application support, contact PLC Source PRO, a trusted supplier of industrial automation spares.